Does anybody have any connections for BBVL similar leagues/groups to join up with or get in contact with in the south Florida region? (West Palm Beach specifically)

I have never played beach volleyball before, and the only experience I've had with indoor volleyball was during gym class in middle/high school. I know that it's broad to ask for tips on where to start, but I'm nervous about getting out there. Thank you!

How do you build the mental fortitude to stay focused when either experiencing adversity on the court like falling behind or even when you are building a lead and need to stay focused and finish strong? Does that mental fortitude come from repetition and practicing your craft? Is there anything off the court that helps?